Automatic spraying device.



J. H. B. SHANNON..

AUTOMATIC SPRAYING DEVICE.

APPLICATION FILED 11131424, 1914. 1 1 22,544. Patented D60. 29, 1914. 2 SHEETS-SHEET l. I

EN NAW@ J. H. B. SHANNON.

AUTOMATIC SPRAYING DEVICE.

APPLCATION FILED FEB.24, 1914.

Patented Dec. 29, 1914,

Z SHEETS-SHEET 2.

bacilli.

; usually operated b l UNITED STATES PATENT OFFICE.'

TOEN H. B. SHANNON, OF NEWARK, NEW JERSEY, ASSIGNOR TO I DISINFECTANT A ND UTILITIES CORPORATION, A CORPORATION OF NEW YORK.

AUTOMATIC SPRAYIN G DEVICE.

Specification of Letters Patent.

Patented Dec. 29, 1914.

able time, the air, besides becoming vitiated,

may become contaminated by germs and This has long' been recognized as a danger and attempts have heretofore been made to disinfect halls ofthis character by means cfa hand spraying y an attendant during.

intermissions. Devices of this character are unsatisfactory because the disinfecting effeet soon disappears, and in some-cases the useof these hand-sprayers -is positively dangerous on account of the fact that the spraying takes place in close proximity'to the spectators.

The main object of this invention-is to produce a compact and eicient Vdevice for l7 maintaining a all disinfected at all times.

One feature of the invention resides in an atomizer 'operated by a reciprocating pump, to ether with an outlet from the pump to t e atomizer, and an intake for the pump which is of insuicient capacity' to supply the ca' acity of the pump, thereby causing a bac suction through the outlet from the pump. -Owin to the small capacity of this intake and y'means of the arrangement of the tank, nozzles and sleeve device' the disinfecting liquid is conserved for use to the maximum measure of time through being very finely atomized, thereby getting a maximum amount of efficiency rom a determined amount of disinfecting device, which is l .container or tank 2 tion of parts, and arran ement of elements will appear as the speci cation proceeds.

i n the accompanying drawings the invention is embodied in a concrete and preferred form, but changes of construction may be made without departing from the legitimate and intended scope of the invention as expressed in the appended claims.

In the said drawings: Figure 1 is a view of a device embodying the invention, in elevation, and partly in section. Fig. 2 is a view looking in the direction of the arrow in Fig. l, partly in section. F ig. 3 is a top plan view, and Fig. 4 is'a detail view of the motor support.

Similar characters of reference refer to similar parts throughout the specification and claims.

Toa basemember-lis attached a liquid having an offset portion 3 therein, said tank 'containing near the offset portion thereof coverin the same, fortlrel purpose of of said tank isplaced the -cylinder 6 of the ating therein. Running through the piston is an air intake 8, having a check controlling device 9 to check the passage of air cutward from said cylinder '6 after it has once entered. A ipe or air supply device 10 supplies air fiom the cylinder and is connected to the atomizin device.

The air intake 8 belng of a size insufhcient to supply air equal tothe capacity of the pump, upon the suction stroke of the piston 7, a somewhat slight suction is had, thereby forming apartial vacuum within the cylinder 6, which vacuum, in turn, causes a sucking-in effect at the spraying device, and by reason of the parts hereinafter described, the disinfecting liquid is conserved.

The intake 8 must not be of too insufficient capacity, as the total amount of air required could notvbe fed through the supply device 10 but would choke therein and thereby cause an undue and unnecessary load on the motor, owing to the constricted l.mouth of the supply device 10. Y

To the atomizing device 4 are attached pressure and spray tubes 12 and 13 of relatively small size, each ending in a close vicinity to each other, the tube 12 being conthe atomizer 4. There 1s a vent 5 near the atomizer, with a mg sai tank. lWithinthe-.ofsctportion 3 nected to the partf'lO andthe tube:13fleaiding".Vv

poorly atomized andV comparatively heavier liquid will be sucked back into the lower `apertures 13 and 13".

part of the device 12 and will then fall by gravity back into the tank 2 through the p By this arrangemont, the disinfecting liquid is conserved to the maximum efliciency of result. Spanning the liquid tank 2 are two arched members 1-1`and 15 respectively, said arched members having inturned portions 16 which lie. un-

der said liquid tank 2 and are attached to said base member 1 by means4 of screws,

bolts, rivets or other vsuitablev fastening means, fastened vthrough `suitable apertures 17 in said intur'ned portions 16. Connecting these two arched members 1i and 15 area pair of bridge members 18 and l9rrespectively, having near their centers suitable apertures 2O for the mounting of a rotary moi tor 21 thereupon, saidn motor being fastened bybolts 22 or other suitable fastening devices. O n anend of the shaft 23 of the motor is mounted a Worm 24 to mesh with a suitable reducing Worm gear 25. To Vsaid reducing worm gear 25 is attached a crank disk 26 having an aperture 27 therein for the adjustable coupling therewith of a suitable piston pitman 28, said pitman having a multiplicity of apertures 29 therein for adjustable coupling with said crank disk 26. The other end of the pitman 28 is connected to the piston 7 of the pump at 30 by'means of any suitable coupling device. These devices are inclosed 1n a suitable casing 31 which is attached to the base l by means of screws 32 or other suitable fastening devices. Upon the top of this casing S1 is attached a snap switch 33 of the ordinary construction, the circuit Wires 34 thereof running to the motor for suitable manipulation, said snap switch controlling the' current received through proper )wires 35 which are run through an aperture 36 in the casing and up through the said casing again to the switch. v

rlhe casing 31 is perforated in the upper part of the two end portions as indicated at 37 and 3S respectively,y and the major part of these perforations are in alinement with sleeve liquid retaining device'12 of a size I ,the fanilfattached in any suitn able or desired manner to the rotor shaft 23 at the opposite end from the Worm gear 24,

that is,='at the" rear off the'motor 21.A This fan 89 Uforces airin through the casing at one end and out at the other past the end pf the Allnozzle 12 thereby assistin to atomize anddiiuse a certain amount ot the disinfe'cting'liquid that would otherwise'n'collect at themouth of the retaining device in the form of a light mist.

In operation the snap switch 33 is closed, which, starting the motor, operates the crank disk 26'. at' a reduced speed through the .medium of'said Worm and Worm gear rearrangementthe piston is operated a re- -ciprocatory fashion in said cylinder, dravvmg air through the intake and air supply device upon the vupward stroke of thejpiston 7, Whileupon thedoWn stroke of the piston 7 the in takecheckV valve 9 is closed, allow- .ing noiair to escape. by this means, but allow-- ing? thezair-'in -thecylinder 6 to pass to the atomizer, where the liquid -is sprayed forth.

-What is claimedf-i's.: 1. Anautomatic iatomizing device comprising adjacent liquid and air nozzles, a

tankconnectedto said liquid nozzle, a liquid collecting device surrounding said nozzles .and in communication with the tank, a' reciprocating pump,an unobstructed connccwhereby the. flow of air on the compression stroke of the ump sets up spraying action and wherebyv ow of air on the suction stroke feeds back; the surplus liquid in the collect- A ,.1102' `tion between saidlpumpf and air nozzle" ing device, and an intake forthe pump .hav`

ing avalve adapted to be closed on the compression stroke, said intake being of a size .insuflicient to -supply an amount of air to the pump equal to the capacity of the pump.

2. =An lautomatic atomizing device com-v prising liquid and air' nozzles adjacent to each other,'.a. tank connected to said liquid nozzle, a collectingsleeve surrounding said nozzles to retain poorly vaporized liquid and return same. to said tank, areciprocating pump, an -unobstructed supply device between saidV pump and air nozzle tosup l'y air to said nozzle tospra'y the liquid andp to cause the retained liquid in said surrounding deviceto feed back into-said tank vupon the suction. stroke of 'said pump, and anfintaketo. said pump of a s1ze insuiiicient to supplyan amount of air to :the pump equal to thecapacity of the pump whereby a cerltionamountof air is drawn into the pump on its suctionstroke through the collecting sleeve, air nozzleand supplydevice.

8. An automaticatomizmg device comprising Va reciprocating, pump, a restricted lli air supply device to said pump, tivo adjacent tubes, one to supply air and one to supply liquid to be sprayed by the air received through said air supplying tube, a tank connected 'to and supplying liquid to said liquid tube, a device surrounding said tubes and feeding into said tank to i Vain superfluous liquid, and means connecting said air supplying tube to said pump to either feed air to said tube to spray liquid or to suck supertluous liquid so that it Will flow back into said tank from said surrounding device upon the reciprocation ot' said pump.

l. n automatic spraying device comprising a tank, a liquid nozzle i'eeding from said tank, a superfluous liquid retainer feeding into said tank, an air supply tube running Within said retainer and adjacent to said liquid nozzle to atomize the liquid, a reciprocating pump connected to said air supply tube, and a restricted air inlet to said pump te restrict the Jfull feeding of air to the pump to cause a back suction through the supply tube and thereby cause the supertluous liquid in the retainer to How back into the tank.

5. An automatic spraying device comprising an atomizer having tubular nozzles and a superfluous liquid retainer, a liquid tank having said nozzles in communication therewith, and a reciprocating pump connected to one of said tubular nozzles and having a restricted intake closed on the compression stroke so that upon the compression stroke of the pump air is supplied to said tubular nozzle to spray liquid supplied through the other of said tubular nozzles and upon the suction stroke the superfluous liquid is ed back to the tank `from the retainer through the action of one ot said nozzles.

Signed at New York city in the county of New York and State ot' New York this 17th day ora February A. D. 1914.

JGHN H. B. SHNEON. 

